46-310 6.0mm Dia. x -18 FL; UV-AR Coated; UV Plano-Concave Lens 250-425nm

The 46-310 is a 6.0mm diameter UV-AR coated plano-concave lens with a focal length of -18, sourced from Edmund Optics. This lens is designed for use within the ultraviolet spectrum, specifically between 250-425nm, making it ideal for applications such as UV imaging, spectroscopy, and other UV-based research or industrial processes.

The lens is constructed from fused silica (mal-1965), a material known for its high transparency in the UV range, low auto-fluorescence, and excellent thermal shock resistance. The plano-concave geometry, with a center thickness of 2mm and an edge thickness of 2.45mm, provides a negative focal length, which can be beneficial in a variety of optical systems.

The lens features UV-AR coating on both the front and back surfaces, which is Edmund Optics' standard curve. This coating is designed to enhance the lens's performance in the UV range by reducing surface reflections and increasing transmission. The coating also provides some protection against environmental factors, such as dust and minor abrasions.